GM Cutlass RWD 1970-1987 Repair Guide

Engine Serial Number Location

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On all V8 engines and the V6 231 engine through 1979, the serial number is found on a pad at the front right or left hand side of the cylinder block, just below the cylinder head. On the 1980 and later V6 231, and the 1984 and later V6 diesel engine, the serial number is found on the left rear of the block.

See Figures 1, 2 and 3



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Fig. Fig. 1: Manual transmission serial number location



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Fig. Fig. 2: Various optional serial number locations on the Turbo Hydra-matic transmissions



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Fig. Fig. 3: Rear axle code location

 
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